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Variola minor in Braganca Paulista County, 1956: household aggregation of the disease and the influence of household size on the attack rate

Published online by Cambridge University Press:  15 May 2009

Juan J. Angulo  and
Stephen D. Walter
Juan J. Angulo
Affiliation:
Instituto Adolfo Lutz, São Paulo, S.P., Brazil
Stephen D. Walter
Affiliation:
Department of Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut, USA
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Summary

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Household aggregation of cases, one possible characteristic of person-to-person transmitted disease, was formally tested in one epidemic of variola minor by using a pair statistic. A significant result was found for all households as well as for households grouped by the type of environment, or by the phase of the epidemic growth in time. Secondary attack rates, when related to household size (number of susceptibles) showed only a marginal trend in rural households but no trend in urban or semi-rural households.

Type
Research Article
Information
Journal of Hygiene , Volume 82 , Issue 1 , February 1979 , pp. 1 - 6
Copyright
Copyright © Cambridge University Press 1979

References

REFERENCES

Angulo, J. J. (1976). Variola minor in Braganca Paulista County, 1956: overall description of the epidemic and of its study. International Journal of Epidemiology 5, 359–65.CrossRefGoogle ScholarPubMed
Angulo, J. J., Rodrigues-da-Silva, G & Rabello, S. I. (1967). Spread of variola minor in households. American Journal of Epidemiology 86, 479–87.CrossRefGoogle ScholarPubMed
Angulo, J. J., Rodrigigues-da-Silva, G. & Rabello, S. I. (1968). Sociological factors in the spread of variola minor in a semi-rural school district. Journal of Hygiene 66, 7–18.CrossRefGoogle Scholar
Arnt, N & Morris, L (1972). Smallpox outbreak in two Brazilian villages: epidemiological characteristics. American Journal of Epidemiology 95, 363–70.CrossRefGoogle Scholar
Dixon, C. W. (1948). Smallpox in Tripolitania, 1946: an epidemiological and clinical study of 500 cases, including trials of penicillin treatment. Journal of Hygiene 46, 351–77.Google ScholarPubMed
Heiner, G. G., Fatima, N & McCrumb, F. R. Jr (1971). A study of intrafamilial transmission of smallpox. American Journal of Epidemiology 94, 316–26.CrossRefGoogle ScholarPubMed
Henderson, R. H. & Yepke, M. (1969). Smallpox transmission in southern Dahomey: a study of a village outbreak. American Journal of Epidemiology 90, 423–8.CrossRefGoogle ScholarPubMed
Klauber, M. R. & Angulo, J. J. (1974). Variola minor in Braganca Paulista County, 1956: space-time interactions among variola-minor cases in two elementary schools. American Journal of Epidemiology 99, 65–74.CrossRefGoogle ScholarPubMed
Pearson, K (1912). On the appearance of multiple cases of disease in the same house. Biometrika 8, 404–12.CrossRefGoogle Scholar
Troup, J. M. & Maynard, G. D. (1912). Note on the extent to which the distribution of cases of disease in houses is determined by the laws of chance. Biometrika 8, 396–403.CrossRefGoogle Scholar
Walter, S. D. (1974). On the detection of household aggregation of disease. Biometrics 30, 525–38.CrossRefGoogle ScholarPubMed